Post List

  • August 13, 2010
  • 07:52 AM
  • 688 views

Out of randomness, order

by Becky in It Takes 30

I really shouldn’t need help to spot a paper from the Elowitz lab, but Marc Kirschner had to remind me to write on this one (Sprinzak et al. 2010 Cis-interactions between Notch and Delta generate mutually exclusive signalling states. Nature 465 86-90 PMID: 20418862).  Obviously I haven’t been paying enough attention to cell-cell communication.  This [...]... Read more »

Sprinzak D, Lakhanpal A, Lebon L, Santat LA, Fontes ME, Anderson GA, Garcia-Ojalvo J, & Elowitz MB. (2010) Cis-interactions between Notch and Delta generate mutually exclusive signalling states. Nature, 465(7294), 86-90. PMID: 20418862  

  • August 13, 2010
  • 06:48 AM
  • 947 views

Language Evolution and Language Acquisition

by Sean Roberts in A Replicated Typo 2.0

The way children learn language sets the adaptive landscape on which languages evolve. This is acknowledged by many, but there are few connections between models of language acquisition and models of language Evolution. Here I review previous models of Language Acquisition and a recent model by Fazly et al.... Read more »

Nick Chater, & Morten H. Christiansen. (2010) Language Acquisition Meets Language Evolution. Cognitive Science. info:/

Frank MC, Goodman ND, & Tenenbaum JB. (2009) Using speakers' referential intentions to model early cross-situational word learning. Psychological science : a journal of the American Psychological Society / APS, 20(5), 578-85. PMID: 19389131  

  • August 13, 2010
  • 05:03 AM
  • 1,038 views

Defining developmental disorders through genetics

by Kevin Mitchell in Wiring the Brain

To many people, the term “autism” suggests a specific disorder – one with characteristic and recognizable symptoms, presumably reflecting the same underlying cause.  In fact, no such disorder exists.  Autism refers to a variable spectrum of symptoms – including deficits in social interaction, impaired communication (especially a delay in developing language), narrow, restricted interests and stereotyped behaviours.  Any one child who is diagnosed with autism may show only some of th........ Read more »

Shen, Y., Dies, K., Holm, I., Bridgemohan, C., Sobeih, M., Caronna, E., Miller, K., Frazier, J., Silverstein, I., Picker, J.... (2010) Clinical Genetic Testing for Patients With Autism Spectrum Disorders. PEDIATRICS, 125(4). DOI: 10.1542/peds.2009-1684  

Piton, A., Gauthier, J., Hamdan, F., Lafrenière, R., Yang, Y., Henrion, E., Laurent, S., Noreau, A., Thibodeau, P., Karemera, L.... (2010) Systematic resequencing of X-chromosome synaptic genes in autism spectrum disorder and schizophrenia. Molecular Psychiatry. DOI: 10.1038/mp.2010.54  

  • August 13, 2010
  • 01:42 AM
  • 596 views

A tragedy averted

by Graves in Down the Cellar

Nearly fifty years ago, V.C. Wynne-Edwards proposed that populations might evolve restrained resource exploitation and reproduction. The argument was built on the idea of selection acting for the good of the group. Wynne-Edwards thought that groups that ran rampant would extinguish themselves while frugal groups would replace them, although his argument was very fuzzy in terms of how this group... Read more »

  • August 13, 2010
  • 12:32 AM
  • 1,245 views

Friday Weird Science: So, how would you say your poop FEELS today?

by Scicurious in Neurotic Physiology

The following is my entry for the newly created Carnal Carnival, a blog carnival started by Jason (of The Thoughtful Animal and Child’s Play) and our dear blogfather Bora. Sci is a little upset she didn’t think of it first. This will be a carnival covered the weird and odd and, if possible, the completely [...]... Read more »

Müller-Lissner SA, Kaatz V, Brandt W, Keller J, & Layer P. (2005) The perceived effect of various foods and beverages on stool consistency. European journal of gastroenterology , 17(1), 109-12. PMID: 15647650  

  • August 13, 2010
  • 12:00 AM
  • 1,383 views

Topological insulators get down to business

by Joerg Heber in All That Matters

Go to any condensed-matter physics meeting, and topological insulators are prominent on the agenda, and talks on the topic attract large audiences. For good reason. Topological insulators promise nothing less than a revolution in electronics. Even though as their name suggests topological insulators are electrically insulating, they are conducting on their surface. And unlike regular conductors, these surface currents flow without the electrons being thrown off the track by most (albeit not all)........ Read more »

  • August 12, 2010
  • 11:48 PM
  • 404 views

…A Toast to the Host with the Least Cognitive Decline!

by Rift in Psycasm

A while ago I decided that I needed to cut back my drinking. Which is a shame, because I enjoy it – but I had the sense that it’s doing me no good with regard to uni. The natural reaction is to conclude that hang-overs (however slight) don’t feel good in the head, thus, detrimental [...]... Read more »

  • August 12, 2010
  • 09:55 PM
  • 502 views

Early Computational Prediction of Influenza Epidemic Mortality

by Michael Long in Phased

Taijiao Jiang (Chinese Academy of Sciences) and coworkers are helping public health officials predict the severity of future influenza outbreaks, without requiring extensive current mortality data, and without time-consuming biochemical assays. This news feature was written on August 12, 2010.... Read more »

  • August 12, 2010
  • 08:30 PM
  • 817 views

Hybridization is like sex

by Razib Khan in Gene Expression

One of the major issues which has loomed at the heart of biology since The Origin of Species is why species exist, as well as how species come about. Why isn’t there a perfect replicator which performs all the conversion of energy and matter into biomass on this planet? If there is a God the tree [...]... Read more »

  • August 12, 2010
  • 06:09 PM
  • 2,072 views

Drugs for Starcraft Addiction

by Neuroskeptic in Neuroskeptic

Are you addicted to Starcraft? Do you want to get off Battle.net and on a psychoactive drug?Well, South Korean psychiatrists Han et al report that Bupropion sustained release treatment decreases craving for video games and cue-induced brain activity in patients with Internet video game addiction.They took 11 people with "Internet Game Addiction" - the game being Starcraft, this being South Korea - and gave them the drug bupropion (Wellbutrin), an antidepressant that's also used in drug addiction........ Read more »

  • August 12, 2010
  • 06:00 PM
  • 1,588 views

Why are some urinary tract infections chronic?

by Greg Laden in Greg Laden's Blog

Chronic infection is, in a way, the new emerging infectious disease. Many pathogens are relatively tenacious when they infect elderly individuals or individuals who are otherwise not fully immunocompetent, and such individuals are, thanks to modern medical technology and practice, more common in the population. Resistant bacteria can cause chronic infection. It is interesting to see more research oriented specifically towards the problem of chronic infection as a problem in and of itself, and........ Read more »

Hanan, T.H., Mysorekar, I.U., Hung, C.S., Isaacson-Schmid, J.L., & Hultgren, S.J. (2010) Early Severe Inflammatory Responses to Uropathogenic E. coli Predispose to Chronic and Recurrent Urinary Tract Infection . PLoS Pathogens, 6(8). info:/10.1371/journal.ppat.1001042

  • August 12, 2010
  • 05:00 PM
  • 575 views

Neury Thursday: Neuroanatomically Disentangling Autism

by Allison in Dormivigilia

British research have identified neuroanatomical pathologies in individuals with autism spectrum disorder that certainly complement the social, behavioral, and cognitive differences of these individuals... Read more »

Christine Ecker,1 Andre Marquand,2 Janaina Mourão-Miranda,3,4 Patrick Johnston,1 Eileen M. Daly,1, Michael J. Brammer,2 Stefanos Maltezos,1 Clodagh M. Murphy,1 Dene Robertson,1 Steven C. Williams,3, & and Declan G. M. Murphy1. (30) Describing the Brain in Autism in FiveDimensions—Magnetic Resonance Imaging-Assisted Diagnosis of Autism Spectrum Disorder Using a Multiparameter Classification Approach. Journal of Neuroscience, 10612. info:/10.1523/JNEUROSCI.5413-09.2010

  • August 12, 2010
  • 04:48 PM
  • 1,482 views

Toward a better agriculture… for everyone

by Anastasia B in Biofortified

A recent paper in PLoS concluded: we reject the organic-conventional dichotomy and emphasize that, in order to optimize environmental sustainability, individual tactics must be evaluated for their environmental impact in the context of an integrated approach, and that policy decisions must be based on empirical data and objective risk-benefit analysis, not arbitrary classifications. The paper was Choosing Organic Pesticides over Synthetic Pesticides May Not Effectively Mitigate Environmental Ris........ Read more »

  • August 12, 2010
  • 04:44 PM
  • 1,158 views

Praying for abstinence

by Tom Rees in Epiphenom

Religious people are less likely to drink heavily. However, there's a chicken-and-egg problem here. Is it that turning to god help people stay off the demon drink, or is it that hard-core party animals are less likely to be religious?

These questions crop up a lot in studies of religion, but there are a couple of ways round them. Basically, you can look at what happens over time (does being religious at the start of the year predict alcohol consumption at the end), or you can encourage people t........ Read more »

Lambert, N., Fincham, F., Marks, L., & Stillman, T. (2010) Invocations and intoxication: Does prayer decrease alcohol consumption?. Psychology of Addictive Behaviors, 24(2), 209-219. DOI: 10.1037/a0018746  

  • August 12, 2010
  • 02:15 PM
  • 822 views

A Safe, Cheap, and Stable Aqueous Lithium-Ion Battery

by Michael Long in Phased

Yong-Yao Xia (Fudan University, China) and coworkers' aqueous lithium-ion batteries exhibit excellent recharge capability, and with further technical development will become commercially viable. This news feature was written on August 12, 2010.... Read more »

  • August 12, 2010
  • 02:03 PM
  • 827 views

Good news for cyclists

by Ashartus in exposure/effect

Several researchers in the Netherlands recently looked at the effects of riding a bike vs. driving a car on health – more specifically mortality and life expectancy. After considering the health benefits of increased physical activity vs. the effects of increased air pollution exposure and increase in traffic accidents, they concluded that on average people [...]... Read more »

Johan de Hartog, J., Boogaard, H., Nijland, H., & Hoek, G. (2010) Do the Health Benefits of Cycling Outweigh the Risks?. Environmental Health Perspectives, 118(8), 1109-1116. DOI: 10.1289/ehp.0901747  

  • August 12, 2010
  • 01:41 PM
  • 727 views

Dung Gone

by Journal Watch Online in Journal Watch Online

Scat. Dung. Droppings. Feces. Call it what you will, excrement is often treasured by wildlife biologists. It can tell scientists what an animal is eating, if it is healthy or sick, and each load carries a trove of identifying DNA. Tracking turds is also a longstanding, non-invasive method for monitoring rare, secretive species, such as […] Read More »... Read more »

  • August 12, 2010
  • 01:32 PM
  • 910 views

Left hemisphere already specialised for language by two months of age

by BPS Research Digest in BPS Research Digest

It's widely known that in the majority of people the left hemisphere is dominant for language. But how early does this lateralisation of function emerge? An obvious way to find out is to put babies in a brain scanner and see if their brains show the same left-sided preference for language, compared with other auditory stimuli, as is observed in adults. Of course, from a practical perspective, that's easier said than done.

Ghislaine Dehaene-Lambertz and her colleagues scanned the brains of ........ Read more »

Dehaene-Lambertz, G., Montavont, A., Jobert, A., Allirol, L., Dubois, J., Hertz-Pannier, L., & Dehaene, S. (2010) Language or music, mother or Mozart? Structural and environmental influences on infants’ language networks. Brain and Language, 114(2), 53-65. DOI: 10.1016/j.bandl.2009.09.003  

  • August 12, 2010
  • 01:15 PM
  • 1,204 views

The Eyes Have It - sometimes: using eye position to enhance strength

by mc in begin to dig (b2d)

I was fascinated by Geoff Neupert's article in the latest Power by Pavel Newsletter about his experience using eye position in the kettlebell press. Absolutely awesome to see eye position highlighted in relation to how that action can support movement practice, but also how that support is variable depending on rather a lot else going on in our sensory-motor system, or where the issues are in a complex movement. So let's look at eye position and postural reflexes and how they support m........ Read more »

  • August 12, 2010
  • 01:12 PM
  • 541 views

Mixture Models for Ordinal Data

by Christopher Winship in SMR Blog

Richard Breen and Ruud Luijkx, Mixture Models for Ordinal Data, Sociological Methods & Research 2010 39: 3-24. Cumulative probability models are widely used for the analysis of ordinal data. In this article the authors propose cumulative probability mixture models that allow the assumptions of the cumulative probability model to hold within subsamples of the data. The subsamples are defined [...]... Read more »

Breen, R., & Luijkx, R. (2010) Mixture Models for Ordinal Data. Sociological Methods , 39(1), 3-24. DOI: 10.1177/0049124110366240  

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